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Certain polyester compositions which comprise cyclohexanedimethanol, moderate cyclobutanediol, cyclohexanedimethanol, and high trans cyclohexanedicarboxylic acid

Described as one aspect of the invention are polyester compositions A polyester composition comprising at least one polyester which comprises:
    • (A) a dicarboxylic acid component comprising:
      • i) 70 to 100 mole % of cyclohexanedicarboxylic acid residues or an ester thereof comprising:
        • (a) 80 to 99 mole % trans-cyclohexanedicarboxylic acid residues or an ester thereof; and
        • (b) 1 to 20 mole % cis-cyclohexanedicarboxylic acid residues or an ester thereof;
      • ii) 0 to 30 mole % of aliphatic dicarboxylic acid residues, other than cyclohexanedicarboxylic acid residues, having up to 16 carbon atoms or esters thereof, other than cyclohexanedicarboxylic acid residues; and
      • iii) 0 to 10 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and
    • (B) a glycol component comprising:
      • i) 5 to 35 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and
      • ii) 65 to 95 mole % of 1,4-cyclohexanedimethanol residues, 1,3-cyclohexanedimethanol residues, 1,2-cyclohexanedimethanol residues or esters thereof or mixtures thereof,
wherein the total mole % of said dicarboxylic acid component is equal to 100 mole %;
the total mole % of said glycol component is equal to 100 mole %;
wherein the inherent viscosity of said polyester is from 0.35 to 1.2 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C.; and wherein said polyester has a Tg of from 66 to 120° C. The polyesters may be manufactured into articles.
Owner:EASTMAN CHEM CO

Certain polyester compositions which comprise cyclobutanediol, cyclohexanedimethanol, and high trans-cyclohexanedicarboxylic acid

InactiveUS20070232778A1Easily or more expensively stabilizedLess expensivePolyesterTetrachloroethane
Described as one aspect of the invention are polyester compositions comprising at least one polyester which comprises:(A) a dicarboxylic acid component comprising:i) 70 to 100 mole % of cyclohexanedicarboxylic acid residues or an ester thereof comprising:(a) 70 to 98 mole % trans-cyclohexanedicarboxylic acid residues or an ester thereof; and(b) 2 to 30 mole % cis-cyclohexanedicarboxylic acid residues or an ester thereof;ii) 0 to 30 mole % of aliphatic dicarboxylic acid residues, other than cyclohexanedicarboxylic acid residues, having up to 16 carbon atoms or esters thereof, other than cyclohexanedicarboxylic acid residues,; andiii) 0 to 10 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and(B) a glycol component comprising:i) 1 to 99 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; andii) 1 to 99 mole % of 1,4-cyclohexanedimethanol residues, 1,3-cyclohexanedimethanol residues, 1,2-cyclohexanedimethanol residues or esters thereof or mixtures thereof,wherein the total mole % of said dicarboxylic acid component is equal to 100 mole %;the total mole % of said glycol component is equal to 100 mole %;wherein the inherent viscosity of said polyester is from 0.35 to 1.2 dL / g as determined in 60 / 40 (wt / wt) phenol / tetrachloroethane at a concentration of 0.5 g / 100 ml at 25° C.; and wherein said polyester has a Tg of from 60 to 155° C. The polyesters may be manufactured into articles.
Owner:EASTMAN CHEM CO
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